Eden Prairie, MN -- (Sports Network) - The Minnesota Vikings signed their remaining three draft picks Wednesday, including their top choice, safety Tyrell Johnson.

Along with Johnson, a second-rounder, fifth-round selection quarterback John David Booty and sixth-round selection center John Sullivan also signed.

Out of Arkansas State, Johnson was named Sun Belt Conference Defensive Player of the Year last season while earning first-team All-Sun Belt honors in his final three seasons after a second-team selection his freshman year.

Booty, a Heisman candidate front-runner in the 2007-08 campaign until a midseason injury, left USC with 55 touchdown passes, fourth all-time at the school. He was a 2006 All-Pac-10 selection before earning offensive MVP honors at the 2007 Rose Bowl. He led the Trojans to two Rose Bowl victories and holds the record for career touchdown passes in the game.

Sullivan started 31 consecutive games in the midst of his career at Notre Dame before a knee injury forced him to miss his final two games last season.

The Vikings only had five draft picks this season with only Johnson picked in the first four rounds.